Finding the Fourth Proportional to 113,087.52, 169,308.72 and 89,748

Step by Step Solution

1. Step 1: Write the proportion equation
   113,087.52 : 169,308.72 = 89,748 : x
2. Step 2: Convert to fraction form
   113,087.52/169,308.72 = 89,748/x
3. Step 3: Cross multiply
   113,087.52x = 169,308.72 × 89,748
4. Step 4: Simplify right side
   113,087.52x = 15,195,119,002.56
5. Step 5: Solve for x
   x = 15,195,119,002.56/113,087.52
6. Step 6: Final answer
   x = 134,366.01